By David Manners 21st October 2022
A LIN pre-driver IC for relay DC motors from Melexis  includes 48 KB of memory (16 KB ROM for the included LIN protocol and 32 KB Flash for the application software.
The MLX81160 is the latest addition to the company’s Gen3 family of compatible embedded motor drivers.
By leveraging high-voltage SOI technology, this LIN-based pre-driver exhibits operational robustness for 12 and 24 V applications.
This device is the successor to the company’s widely implemented MLX81150 LIN slave device for relay and DC motor control.
The key uses are window lifters and sunroof regulators with relay DC motors, as well as small DC motor applications with external PN-MOSFET power regulation.
AEC-Q100 qualified, the MLX81160 incorporates all the essential functional elements for motor driving within a single chip.
These include a LIN interface, an embedded microcontroller unit, 6x PWM drivers, 3x high-voltage I/Os, and more.
Extra I/Os allow connecting a dedicated 4-wire latch for motor indexing.
Melexis will soon launch a new 4-wire latch: the innovative features of the MLX92352 will provide the ultimate flexibility.
Together with the MLX81160 it is a full Sense & Drive solution.
The MLX81160 is embedded into a compact 4 mm x 4 mm QFN24 package. It fits on the smallest PCB when used for state-of-the-art mechatronics.
On top of enabling performance improvements and reducing costs, and having the smallest dimensions, the MLX81160 has other important advantages.
These include faster programmability (with 32 KB Flash completed in <2.5sec) and ASIL B functional safety capabilities.
Thedual current sensing feature permits ripple counting and the driving of multiple DC motors.
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